该是一件好事约自制结肠清洗的是你知道什么是在它和你有控制权的准备。

The good thing about homemade colon cleanse is that you know what is in it and you have control over its preparation.

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不论过去发生了什么，提起它的人是在目前受到了与过去相似的感觉。

Regardless of what happened before, the person bringing up the past is feeling something similar now.

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它只不过是意识到你已经在什么地方的一件事。

It is simply a matter of realizing where you already are.

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We could just collect a bunch of data. For a material .What's the volume it occupies at some pressure and temperature?

对一种物质我们可以得到一系列测量数据,在给定的温度和气压下,它的体积是什么？

麻省理工公开课 - 热力学与动力学课程节选

Whatever the number two is, it's something that our mind can grasp but isn't actually in the physical world.

不管数字2是什么,它是心灵可以掌握的东西,而在物质世界中却不存在

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And so it has what? In contrast to the sigma, it has a nodal plane containing both nuclei.

这是什么，和sigma相反，它是包覆在核上的平面电子云，有一个界面。

麻省理工公开课 - 固态化学导论课程节选